261 results about "Air pollution" patented technology

Air pollution occurs when harmful or excessive quantities of substances including the gases (CO₂, CO, SO₂, NO, CH₄, CFC, Radon, etc.), particles (both organic and inorganic), and biological molecules are introduced into Earth's atmosphere. It may cause diseases, allergies and even death to humans; it may also cause harm to other living organisms such as animals and food crops, and may damage the natural or built environment. Both human activity and natural processes can generate air pollution.